海相低渗砂岩油藏动态产能指标快速预测  

Rapid Prediction of Dynamic Productivity Index of MarineLow Permeability Sandstone Reservoir

作　　者：刘冲[1] 朱定军 LIU Chong;ZHU Ding-jun(CNOOC Central Laboratory of CNOOC Ener-Tech-Drilling&Production Co.,Ltd.Zhanjiang 524057,China;CNOOC Ltd.Hainan,Haikou 570000,China)

机构地区：[1]中海油能源发展股份有限公司工程技术湛江分公司,广东湛江524057 [2]中海石油(中国)有限公司海南分公司,海南海口570000

出　　处：《东华理工大学学报（自然科学版）》2022年第1期38-41,86,共5页Journal of East China University of Technology(Natural Science)

基　　金：国家科技重大专项“文昌13-1油田整体调整国家示范工程”(2011ZX05009-003)。

摘　　要：近海低渗油藏开发生产后,产能指标预测是油藏开发方案制定及调整的重要参考依据。由于海上平台获取资料成本高、难度大,导致近海低渗油藏的产能及压力测试资料较少。在缺乏油藏资料条件下如何准确预测近海低渗油藏的产能指标成为一大难题。通过分析地层压力传播过程中低渗油藏产能的变化规律,认为该类型油藏开发过程中压力与时间的关系符合线性递减,产量与时间的关系可近似划分为稳产和指数递减两个阶段。参考流入流出动态曲线确定各节点压力、产量,代入压力时间、产量时间关系可预测低渗油藏开发指标。应用实例表明该预测方法较为合理,可供相似低渗油藏使用参考。After the development of low permeability offshore reservoirs,the prediction of productivity index is an important reference basis for the formulation and adjustment of the reservoir development plan.Due to the high cost and difficulty of obtaining data from the offshore platform,there are few productivity and pressure test data of low permeability offshore reservoirs.In the absence of reservoir data,how to accurately predict the productivity index of low permeability offshore reservoirs has become a major problem.By analyzing the variation law of productivity of low-permeability reservoir in the process of formation pressure propagation,it is considered that the relationship between pressure and cumulative production time in the development process of this type of reservoir conforms to linear decline,and the relationship between production and cumulative production time can be approximately divided into two stages:stable production and exponential decline.Then,the pressure and production of each node are determined by referring to the Vogel curve,and the development index of low permeability reservoir can be predicted by substituting the relationship between the pressure&cumulative production time,the production&cumulative production time.The application example shows that the prediction method is reasonable and can be used as a reference for similar low permeability reservoirs.

关 键 词：低渗油藏开发 产能指标预测 动态产能研究 文昌油田 

分 类 号：TE348[石油与天然气工程—油气田开发工程]